diff options
Diffstat (limited to 'arch/m68k/mac/oss.c')
| -rw-r--r-- | arch/m68k/mac/oss.c | 106 |
1 files changed, 86 insertions, 20 deletions
diff --git a/arch/m68k/mac/oss.c b/arch/m68k/mac/oss.c index ed95270..cc784c2 100644 --- a/arch/m68k/mac/oss.c +++ b/arch/m68k/mac/oss.c @@ -32,10 +32,11 @@ int oss_present; volatile struct mac_oss *oss; -static irqreturn_t oss_irq(int, void *); -static irqreturn_t oss_nubus_irq(int, void *); - +#ifdef CONFIG_GENERIC_HARDIRQS +extern void via1_irq(unsigned int irq, struct irq_desc *desc); +#else extern irqreturn_t via1_irq(int, void *); +#endif /* * Initialize the OSS @@ -63,23 +64,6 @@ void __init oss_init(void) } /* - * Register the OSS and NuBus interrupt dispatchers. - */ - -void __init oss_register_interrupts(void) -{ - if (request_irq(OSS_IRQLEV_SCSI, oss_irq, 0, "scsi", (void *)oss)) - pr_err("Couldn't register %s interrupt\n", "scsi"); - if (request_irq(OSS_IRQLEV_NUBUS, oss_nubus_irq, 0, "nubus", - (void *)oss)) - pr_err("Couldn't register %s interrupt\n", "nubus"); - if (request_irq(OSS_IRQLEV_SOUND, oss_irq, 0, "sound", (void *)oss)) - pr_err("Couldn't register %s interrupt\n", "sound"); - if (request_irq(OSS_IRQLEV_VIA1, via1_irq, 0, "via1", (void *)via1)) - pr_err("Couldn't register %s interrupt\n", "via1"); -} - -/* * Initialize OSS for Nubus access */ @@ -92,6 +76,34 @@ void __init oss_nubus_init(void) * and SCSI; everything else is routed to its own autovector IRQ. */ +#ifdef CONFIG_GENERIC_HARDIRQS +static void oss_irq(unsigned int irq, struct irq_desc *desc) +{ + int events; + + events = oss->irq_pending & (OSS_IP_SOUND|OSS_IP_SCSI); + if (!events) + return; + +#ifdef DEBUG_IRQS + if ((console_loglevel == 10) && !(events & OSS_IP_SCSI)) { + printk("oss_irq: irq %u events = 0x%04X\n", irq, + (int) oss->irq_pending); + } +#endif + /* FIXME: how do you clear a pending IRQ? */ + + if (events & OSS_IP_SOUND) { + oss->irq_pending &= ~OSS_IP_SOUND; + /* FIXME: call sound handler */ + } else if (events & OSS_IP_SCSI) { + oss->irq_pending &= ~OSS_IP_SCSI; + generic_handle_irq(IRQ_MAC_SCSI); + } else { + /* FIXME: error check here? */ + } +} +#else static irqreturn_t oss_irq(int irq, void *dev_id) { int events; @@ -119,6 +131,7 @@ static irqreturn_t oss_irq(int irq, void *dev_id) } return IRQ_HANDLED; } +#endif /* * Nubus IRQ handler, OSS style @@ -126,6 +139,34 @@ static irqreturn_t oss_irq(int irq, void *dev_id) * Unlike the VIA/RBV this is on its own autovector interrupt level. */ +#ifdef CONFIG_GENERIC_HARDIRQS +static void oss_nubus_irq(unsigned int irq, struct irq_desc *desc) +{ + int events, irq_bit, i; + + events = oss->irq_pending & OSS_IP_NUBUS; + if (!events) + return; + +#ifdef DEBUG_NUBUS_INT + if (console_loglevel > 7) { + printk("oss_nubus_irq: events = 0x%04X\n", events); + } +#endif + /* There are only six slots on the OSS, not seven */ + + i = 6; + irq_bit = 0x40; + do { + --i; + irq_bit >>= 1; + if (events & irq_bit) { + oss->irq_pending &= ~irq_bit; + generic_handle_irq(NUBUS_SOURCE_BASE + i); + } + } while(events & (irq_bit - 1)); +} +#else static irqreturn_t oss_nubus_irq(int irq, void *dev_id) { int events, irq_bit, i; @@ -153,6 +194,31 @@ static irqreturn_t oss_nubus_irq(int irq, void *dev_id) } while(events & (irq_bit - 1)); return IRQ_HANDLED; } +#endif + +/* + * Register the OSS and NuBus interrupt dispatchers. + */ + +void __init oss_register_interrupts(void) +{ +#ifdef CONFIG_GENERIC_HARDIRQS + irq_set_chained_handler(OSS_IRQLEV_SCSI, oss_irq); + irq_set_chained_handler(OSS_IRQLEV_NUBUS, oss_nubus_irq); + irq_set_chained_handler(OSS_IRQLEV_SOUND, oss_irq); + irq_set_chained_handler(OSS_IRQLEV_VIA1, via1_irq); +#else /* !CONFIG_GENERIC_HARDIRQS */ + if (request_irq(OSS_IRQLEV_SCSI, oss_irq, 0, "scsi", (void *)oss)) + pr_err("Couldn't register %s interrupt\n", "scsi"); + if (request_irq(OSS_IRQLEV_NUBUS, oss_nubus_irq, 0, "nubus", + (void *)oss)) + pr_err("Couldn't register %s interrupt\n", "nubus"); + if (request_irq(OSS_IRQLEV_SOUND, oss_irq, 0, "sound", (void *)oss)) + pr_err("Couldn't register %s interrupt\n", "sound"); + if (request_irq(OSS_IRQLEV_VIA1, via1_irq, 0, "via1", (void *)via1)) + pr_err("Couldn't register %s interrupt\n", "via1"); +#endif /* !CONFIG_GENERIC_HARDIRQS */ +} /* * Enable an OSS interrupt |